Contact lenses are an excellent invisible aid to
vision. Eye care practitioners usually fit either a soft or a
gas-permeable
(GP) contact lens for the management of an error of refraction (myopia,
hypermetropia, astigmatism, or presbyopia). But, in some ocular conditions like
keratoconus (conical cornea), wherein spectacles and routine contact lenses do
not provide the needed help in improving vision, eye doctors may, sometimes,
resort to the fitting of a piggy-back system, whereby a GP lens rests on top of
a soft contact lens, resulting in comfortable improvement in vision. (
The
picture from Times of India dated July 23, 2014 shows a koala cub riding on its
mother’s back at a zoo in France).
Dr. Narendra Kumar
4 comments:
Correct me if I am wrong, but is the GP lens something that is apart from the contact lens itself? What does that lens actually do other than what the name implies? I have been thinking about getting some contact lenses because my glasses have become a bit of a burden to carry around all the time. http://libertyvillevision.com/services.html
Dear Admin.
This blog is really helped me to understand about eye care.
Thanks for sharing this important information with us.
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Gas permeable contact lenses are more resistant to lens deposits and don't need to be discarded as frequently as soft lenses.
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